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RSpec.describe Magick::Image, '#bias' do
it 'works' do
image = described_class.new(100, 100)
expect { image.bias }.not_to raise_error
expect(image.bias).to eq(0.0)
expect(image.bias).to be_instance_of(Float)
expect { image.bias = 0.1 }.not_to raise_error
expect(image.bias).to be_within(0.1).of(Magick::QuantumRange * 0.1)
expect { image.bias = '10%' }.not_to raise_error
expect(image.bias).to be_within(0.1).of(Magick::QuantumRange * 0.10)
expect { image.bias = [] }.to raise_error(TypeError)
expect { image.bias = 'x' }.to raise_error(ArgumentError)
end
end
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